Rosa Diaz (aka Emily Goldfinch, if you're talking to her neighbors) has long been a fan favorite on Brooklyn Nine-Nine. Underneath her tough, standoffish exterior is a lovable heart of gold, much like the rest of the characters on the Fox comedy. But on Tuesday night's episode, which marked the 99th episode of the series, we got a big piece of information regarding the notoriously tight-lipped detective's love life post-Adrian Pimento (Jason Mantzoukas).